Sonic the Hedgehog: Pocket Adventure

Sonic the Hedgehog Pocket Adventure is a platform video game in the Sonic the Hedgehog series. It was released in December 1999 in North America, and May 2000 in Japan, exclusively for the Neo Geo Pocket Color handheld game console. It is also the first game of the Sonic series ever to be released on a video game console licensed by a different company other than Sega. Source: Wikipedia, "Sonic the Hedgehog Pocket Adventure", available under the CC-BY-SA License.